Question

Em waves used for earth satellites to observe growth of crops

Answer 1

Electromagnetic waves

Explanation:

We use electromagnetic waves to observe the growth of crops on the Earth's surface with the help of satellites. These satellites use infrared rays to read the position and size of crop on Earth. The wavelength of infrared waves is 1mm to 700 nm. Hot bodies and molecules generate infrared rays. Also, the band lies next to the low-frequency or long-wavelength end of the electromagnetic spectrum. Satellites deploy infrared detectors for military purposes and to observe the growth of crops.